Parking Brake; Tracking Adjustment - Husqvarna Z4818BIA/968999250 Operator's Manual

Parking brake

To adjust parking brake
NOTE: Make sure the brake arm is engaged
into brake sprocket on both sides. You can
push the mower to make it engage into the
sprocket.
Before making any adjustments:
• With the park brake off the sping should
measure 2 3/4'' (70 mm) both sides.
• With the brake on the gap between the
connecting link and the secondary
linkage should be 1/2'' (13 mm) on each
side.
• If not loosen the nut against the yoke and
turn the secondary linkage using the
double nuts until the 1/2'' (13 mm) gap is
achieved on both sides. See Figure.

Tracking adjustment

If the mower is not tracking straight, check
the air pressure in both rear tires.
Recommended air pressure is 15 psi (1 bar).
If the unit will not track straight, follow the
steps below. Tracking must be checked on a
flat and level concrete or blacktop surface.
Mower is tracking to the right.
Increase the air pressure 2-3 psi (0.1-0.2 bar)
in the right rear tire or decrease the air
pressure 2/3 psi in the left rear tire.
Mower is tracking to the left.
Increase the air pressure 2-3 psi (0.1-0.2 bar)
in the left rear tire or decrease the air
pressure 2/3 psi in the right rear tire.
Recheck tracking and keep making
adjustments with the tire pressure until the
unit tracks straight.
DO NOT exceed maximum recommended
tire pressure 24 psi (1.6 bar).
Record the tire pressure for future reference.
MAINTENANCE
1. Connecting link
2. Secondary linkage
3. Double nuts
4. Nut
5. Yoke
Parking brake
8011-771
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English-